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A Real-time Furnace Condition Evaluation Method of Roasting Furnace Based on Temperature Trend Feature Extraction

A feature extraction and roasting furnace technology, which is applied in the field of real-time furnace condition evaluation of roasting furnaces based on temperature trend feature extraction, can solve the problems affecting the stable control of the standard temperature of the boiling layer and the large time delay of the roasting furnace, so as to overcome the problem of large time delays. , Accurate temperature changes, reduce the effect of overfitting

Active Publication Date: 2022-03-08
CENT SOUTH UNIV
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Problems solved by technology

[0005] Based on the above problems, the present invention provides a method for evaluating the real-time furnace condition of the roasting furnace based on temperature trend feature extraction, which solves the problem that the roasting furnace has a large time lag and affects the stable control of the boiling layer standard temperature

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  • A Real-time Furnace Condition Evaluation Method of Roasting Furnace Based on Temperature Trend Feature Extraction
  • A Real-time Furnace Condition Evaluation Method of Roasting Furnace Based on Temperature Trend Feature Extraction
  • A Real-time Furnace Condition Evaluation Method of Roasting Furnace Based on Temperature Trend Feature Extraction

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[0034] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] The embodiment of the present invention takes the zinc hydrometallurgy roasting process of a certain smelter as the background, and the process flow chart is as follows figure 1 shown. During the roasting process, the zinc concentrate particles are mixed evenly by the disc feeder and then blown into the fluidized roasting furnace through the conveyor belt. The blown air fully contacts and reacts with the zinc concentrate. When the wind speed reaches a certain speed, the zinc concentrate particles will be suspended to form a boiling layer. The state of the boiling layer is the main factor affecting the furnace ore of the roaster, and the state of the boiling layer ...

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Abstract

The invention discloses a roasting furnace real-time furnace condition evaluation method based on temperature trend feature extraction. The least square method is used to perform primary and secondary fitting of the input real-time temperature signal, and then the primary and secondary fitting of the fitted signal is performed through a threshold value. The maximum error and cumulative error of the quadratic fitting signal are judged, and the real-time temperature signal is adaptively segmented, and then the qualitative trend category of the current temperature signal is obtained according to the trend division judgment basis, combined with the current temperature signal value and expert rules. Evaluating the current furnace conditions can effectively judge the normal and abnormal state of the boiling layer of the current roaster and remind the abnormal state in advance, so as to effectively ensure the stable operation of the roaster.

Description

technical field [0001] The invention relates to the technical field of process control, in particular to a method for evaluating real-time furnace conditions of a roasting furnace based on temperature trend feature extraction. Background technique [0002] The main goal of the roasting process is to increase the soluble zinc rate of the roasted product. The key influencing factors in this process are temperature, oxygen coefficient and impurity content. Among them, the oxygen coefficient and impurity content are determined, so the site is usually determined by temperature The stability control of the roasting state is used as the main evaluation criterion. In actual operation, the temperature of the boiling layer is generally used as the judgment condition for the roasting state. When the temperature of the boiling layer is too high or too low, it is necessary to adjust the feed rate and blasting volume accordingly to control the temperature within a reasonable range; when ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B15/18G06F30/20
CPCF27B15/18G06F30/20G06F2119/08
Inventor 阳春华蒋梦轩李勇刚孙备桂卫华朱红求冯振湘黄科科龙双
Owner CENT SOUTH UNIV
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